crypto/ec/ecp_nistp224.c

102 /* Precomputed multiples of the standard generator
230 /* Precomputation for the group generator. */
1044  * of the generator, using certain (large) precomputed multiples in g_pre_comp.
1061 	 * of multiples of the generator (two in each of the last 28 rounds)
1071 		/* add multiples of the generator */
1307 /* Computes scalar*generator + \sum scalars[i]*points[i], ignoring NULL values
1330 	EC_POINT *generator = NULL;
1354 		generator = EC_POINT_new(group);
1355 		if (generator == NULL)
1357 		/* get the generator from precomputation */
1366 				generator, x, y, z, ctx))
1368 		if (0 == EC_POINT_cmp(group, generator, group->generator, ctx))
1369 			/* precomputation matches generator */
1373 			 * treat the generator as a random point */
1402 				/* the generator */
1459 	/* the scalar for the generator */
1478 		/* do the multiplication with generator precomputation*/
1486 		/* do the multiplication without generator precomputation */
1504 	if (generator != NULL)
1505 		EC_POINT_free(generator);
1524 	EC_POINT *generator = NULL;
1536 	/* get the generator */
1537 	if (group->generator == NULL) goto err;
1538 	generator = EC_POINT_new(group);
1539 	if (generator == NULL)
1543 	if (!EC_POINT_set_affine_coordinates_GFp(group, generator, x, y, ctx))
1547 	/* if the generator is the standard one, use built-in precomputation */
1548 	if (0 == EC_POINT_cmp(group, generator, group->generator, ctx))
1554 	if ((!BN_to_felem(pre->g_pre_comp[0][1][0], &group->generator->X)) ||
1555 		(!BN_to_felem(pre->g_pre_comp[0][1][1], &group->generator->Y)) ||
1556 		(!BN_to_felem(pre->g_pre_comp[0][1][2], &group->generator->Z)))
1637 	if (generator != NULL)
1638 		EC_POINT_free(generator);